@misc{Wesołowski_Tomasz_(1950–_)_Nest-sites_1989,
 author={Wesołowski, Tomasz (1950– )},
 volume={25},
 number={3},
 editor={Polska Akademia Nauk. Instytut Zoologii},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1989},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 language={rus},
 language={pol},
 title={Nest-sites of hole-nesters in a primaeval temperate forest (Białowieża National Park, Poland)},
 type={Text},
 URL={http://rcin.org.pl./Content/42394/PDF/WA058_59183_P257-T25_Acta-Ornith-Nr-3-2.pdf},
 keywords={breeding birds, cavity-nesting birds, breeding biology, ecology, Poland, Białowieża National Park, Białowieski National Park, birds, Aves},
}